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Merge branch 'sh/for-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
[mirror_ubuntu-bionic-kernel.git] / drivers / misc / fujitsu-laptop.c
CommitLineData
d0482533
JW		 1/*-*-linux-c-*-*/
2
3/*
20b93734
JW		 4 Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
5 Copyright (C) 2008 Peter Gruber <nokos@gmx.net>
d0482533
JW		 6 Based on earlier work:
7 Copyright (C) 2003 Shane Spencer <shane@bogomip.com>
8 Adrian Yee <brewt-fujitsu@brewt.org>
9
20b93734
JW		 10 Templated from msi-laptop.c and thinkpad_acpi.c which is copyright
11 by its respective authors.
d0482533
JW		 12
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful, but
19 WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
26 02110-1301, USA.
27 */
28
29/*
30 * fujitsu-laptop.c - Fujitsu laptop support, providing access to additional
31 * features made available on a range of Fujitsu laptops including the
32 * P2xxx/P5xxx/S6xxx/S7xxx series.
33 *
34 * This driver exports a few files in /sys/devices/platform/fujitsu-laptop/;
35 * others may be added at a later date.
36 *
37 * lcd_level - Screen brightness: contains a single integer in the
38 * range 0..7. (rw)
39 *
40 * In addition to these platform device attributes the driver
41 * registers itself in the Linux backlight control subsystem and is
42 * available to userspace under /sys/class/backlight/fujitsu-laptop/.
43 *
20b93734
JW		 44 * Hotkeys present on certain Fujitsu laptops (eg: the S6xxx series) are
45 * also supported by this driver.
46 *
0e6a66e9
JW		 47 * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and
48 * P8010. It should work on most P-series and S-series Lifebooks, but
49 * YMMV.
20b93734
JW		 50 *
51 * The module parameter use_alt_lcd_levels switches between different ACPI
52 * brightness controls which are used by different Fujitsu laptops. In most
53 * cases the correct method is automatically detected. "use_alt_lcd_levels=1"
54 * is applicable for a Fujitsu Lifebook S6410 if autodetection fails.
55 *
d0482533
JW		 56 */
57
58#include <linux/module.h>
59#include <linux/kernel.h>
60#include <linux/init.h>
61#include <linux/acpi.h>
62#include <linux/dmi.h>
63#include <linux/backlight.h>
20b93734
JW		 64#include <linux/input.h>
65#include <linux/kfifo.h>
66#include <linux/video_output.h>
d0482533 67#include <linux/platform_device.h>
d0482533 68
0e6a66e9 69#define FUJITSU_DRIVER_VERSION "0.4.3"
d0482533
JW		 70
71#define FUJITSU_LCD_N_LEVELS 8
72
73#define ACPI_FUJITSU_CLASS "fujitsu"
74#define ACPI_FUJITSU_HID "FUJ02B1"
20b93734 75#define ACPI_FUJITSU_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
d0482533 76#define ACPI_FUJITSU_DEVICE_NAME "Fujitsu FUJ02B1"
20b93734
JW		 77#define ACPI_FUJITSU_HOTKEY_HID "FUJ02E3"
78#define ACPI_FUJITSU_HOTKEY_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
79#define ACPI_FUJITSU_HOTKEY_DEVICE_NAME "Fujitsu FUJ02E3"
80
81#define ACPI_FUJITSU_NOTIFY_CODE1 0x80
82
83#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86
84#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87
85
86/* Hotkey details */
0e6a66e9
JW		 87#define KEY1_CODE 0x410 /* codes for the keys in the GIRB register */
88#define KEY2_CODE 0x411
89#define KEY3_CODE 0x412
90#define KEY4_CODE 0x413
20b93734
JW		 91
92#define MAX_HOTKEY_RINGBUFFER_SIZE 100
93#define RINGBUFFERSIZE 40
94
95/* Debugging */
96#define FUJLAPTOP_LOG ACPI_FUJITSU_HID ": "
97#define FUJLAPTOP_ERR KERN_ERR FUJLAPTOP_LOG
98#define FUJLAPTOP_NOTICE KERN_NOTICE FUJLAPTOP_LOG
99#define FUJLAPTOP_INFO KERN_INFO FUJLAPTOP_LOG
100#define FUJLAPTOP_DEBUG KERN_DEBUG FUJLAPTOP_LOG
101
102#define FUJLAPTOP_DBG_ALL 0xffff
103#define FUJLAPTOP_DBG_ERROR 0x0001
104#define FUJLAPTOP_DBG_WARN 0x0002
105#define FUJLAPTOP_DBG_INFO 0x0004
106#define FUJLAPTOP_DBG_TRACE 0x0008
107
108#define dbg_printk(a_dbg_level, format, arg...) \
109 do { if (dbg_level & a_dbg_level) \
110 printk(FUJLAPTOP_DEBUG "%s: " format, __func__ , ## arg); \
111 } while (0)
112#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
113#define vdbg_printk(a_dbg_level, format, arg...) \
114 dbg_printk(a_dbg_level, format, ## arg)
115#else
116#define vdbg_printk(a_dbg_level, format, arg...)
117#endif
118
119/* Device controlling the backlight and associated keys */
d0482533
JW		 120struct fujitsu_t {
121 acpi_handle acpi_handle;
20b93734
JW		 122 struct acpi_device *dev;
123 struct input_dev *input;
124 char phys[32];
d0482533
JW		 125 struct backlight_device *bl_device;
126 struct platform_device *pf_device;
0e6a66e9 127 int keycode1, keycode2, keycode3, keycode4;
d0482533 128
20b93734 129 unsigned int max_brightness;
d0482533
JW		 130 unsigned int brightness_changed;
131 unsigned int brightness_level;
132};
133
134static struct fujitsu_t *fujitsu;
20b93734
JW		 135static int use_alt_lcd_levels = -1;
136static int disable_brightness_keys = -1;
137static int disable_brightness_adjust = -1;
138
139/* Device used to access other hotkeys on the laptop */
140struct fujitsu_hotkey_t {
141 acpi_handle acpi_handle;
142 struct acpi_device *dev;
143 struct input_dev *input;
144 char phys[32];
145 struct platform_device *pf_device;
146 struct kfifo *fifo;
147 spinlock_t fifo_lock;
148
149 unsigned int irb; /* info about the pressed buttons */
150};
d0482533 151
20b93734
JW		 152static struct fujitsu_hotkey_t *fujitsu_hotkey;
153
154static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
155 void *data);
156
157#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
158static u32 dbg_level = 0x03;
159#endif
160
161static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data);
162
163/* Hardware access for LCD brightness control */
d0482533
JW		 164
165static int set_lcd_level(int level)
166{
167 acpi_status status = AE_OK;
168 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
169 struct acpi_object_list arg_list = { 1, &arg0 };
170 acpi_handle handle = NULL;
171
20b93734
JW		 172 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBLL [%d]\n",
173 level);
174
175 if (level < 0 || level >= fujitsu->max_brightness)
d0482533
JW		 176 return -EINVAL;
177
178 if (!fujitsu)
179 return -EINVAL;
180
181 status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle);
182 if (ACPI_FAILURE(status)) {
20b93734
JW		 183 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n");
184 return -ENODEV;
185 }
186
187 arg0.integer.value = level;
188
189 status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
190 if (ACPI_FAILURE(status))
191 return -ENODEV;
192
193 return 0;
194}
195
196static int set_lcd_level_alt(int level)
197{
198 acpi_status status = AE_OK;
199 union acpi_object arg0 = { ACPI_TYPE_INTEGER };
200 struct acpi_object_list arg_list = { 1, &arg0 };
201 acpi_handle handle = NULL;
202
203 vdbg_printk(FUJLAPTOP_DBG_TRACE, "set lcd level via SBL2 [%d]\n",
204 level);
205
206 if (level < 0 || level >= fujitsu->max_brightness)
207 return -EINVAL;
208
209 if (!fujitsu)
210 return -EINVAL;
211
212 status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle);
213 if (ACPI_FAILURE(status)) {
214 vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n");
d0482533
JW		 215 return -ENODEV;
216 }
217
218 arg0.integer.value = level;
219
220 status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
221 if (ACPI_FAILURE(status))
222 return -ENODEV;
223
224 return 0;
225}
226
227static int get_lcd_level(void)
228{
27663c58 229 unsigned long long state = 0;
d0482533
JW		 230 acpi_status status = AE_OK;
231
20b93734
JW		 232 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLL\n");
233
d0482533
JW		 234 status =
235 acpi_evaluate_integer(fujitsu->acpi_handle, "GBLL", NULL, &state);
236 if (status < 0)
237 return status;
238
20b93734
JW		 239 fujitsu->brightness_level = state & 0x0fffffff;
240
241 if (state & 0x80000000)
242 fujitsu->brightness_changed = 1;
243 else
244 fujitsu->brightness_changed = 0;
245
246 return fujitsu->brightness_level;
247}
248
249static int get_max_brightness(void)
250{
27663c58 251 unsigned long long state = 0;
20b93734
JW		 252 acpi_status status = AE_OK;
253
254 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get max lcd level via RBLL\n");
255
256 status =
257 acpi_evaluate_integer(fujitsu->acpi_handle, "RBLL", NULL, &state);
258 if (status < 0)
259 return status;
260
261 fujitsu->max_brightness = state;
262
263 return fujitsu->max_brightness;
264}
265
266static int get_lcd_level_alt(void)
267{
27663c58 268 unsigned long long state = 0;
20b93734
JW		 269 acpi_status status = AE_OK;
270
271 vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLS\n");
272
273 status =
274 acpi_evaluate_integer(fujitsu->acpi_handle, "GBLS", NULL, &state);
275 if (status < 0)
276 return status;
277
d0482533
JW		 278 fujitsu->brightness_level = state & 0x0fffffff;
279
280 if (state & 0x80000000)
281 fujitsu->brightness_changed = 1;
282 else
283 fujitsu->brightness_changed = 0;
284
d0482533
JW		 285 return fujitsu->brightness_level;
286}
287
288/* Backlight device stuff */
289
290static int bl_get_brightness(struct backlight_device *b)
291{
20b93734
JW		 292 if (use_alt_lcd_levels)
293 return get_lcd_level_alt();
294 else
295 return get_lcd_level();
d0482533
JW		 296}
297
298static int bl_update_status(struct backlight_device *b)
299{
20b93734
JW		 300 if (use_alt_lcd_levels)
301 return set_lcd_level_alt(b->props.brightness);
302 else
303 return set_lcd_level(b->props.brightness);
d0482533
JW		 304}
305
306static struct backlight_ops fujitsubl_ops = {
307 .get_brightness = bl_get_brightness,
308 .update_status = bl_update_status,
309};
310
20b93734
JW		 311/* Platform LCD brightness device */
312
313static ssize_t
314show_max_brightness(struct device *dev,
315 struct device_attribute *attr, char *buf)
316{
317
318 int ret;
319
320 ret = get_max_brightness();
321 if (ret < 0)
322 return ret;
323
324 return sprintf(buf, "%i\n", ret);
325}
326
327static ssize_t
328show_brightness_changed(struct device *dev,
329 struct device_attribute *attr, char *buf)
330{
331
332 int ret;
333
334 ret = fujitsu->brightness_changed;
335 if (ret < 0)
336 return ret;
337
338 return sprintf(buf, "%i\n", ret);
339}
d0482533
JW		 340
341static ssize_t show_lcd_level(struct device *dev,
342 struct device_attribute *attr, char *buf)
343{
344
345 int ret;
346
20b93734
JW		 347 if (use_alt_lcd_levels)
348 ret = get_lcd_level_alt();
349 else
350 ret = get_lcd_level();
d0482533
JW		 351 if (ret < 0)
352 return ret;
353
354 return sprintf(buf, "%i\n", ret);
355}
356
357static ssize_t store_lcd_level(struct device *dev,
358 struct device_attribute *attr, const char *buf,
359 size_t count)
360{
361
362 int level, ret;
363
364 if (sscanf(buf, "%i", &level) != 1
20b93734 365 || (level < 0 || level >= fujitsu->max_brightness))
d0482533
JW		 366 return -EINVAL;
367
20b93734
JW		 368 if (use_alt_lcd_levels)
369 ret = set_lcd_level_alt(level);
370 else
371 ret = set_lcd_level(level);
372 if (ret < 0)
373 return ret;
374
375 if (use_alt_lcd_levels)
376 ret = get_lcd_level_alt();
377 else
378 ret = get_lcd_level();
d0482533
JW		 379 if (ret < 0)
380 return ret;
381
382 return count;
383}
384
20b93734
JW		 385/* Hardware access for hotkey device */
386
387static int get_irb(void)
388{
27663c58 389 unsigned long long state = 0;
20b93734
JW		 390 acpi_status status = AE_OK;
391
392 vdbg_printk(FUJLAPTOP_DBG_TRACE, "Get irb\n");
393
394 status =
395 acpi_evaluate_integer(fujitsu_hotkey->acpi_handle, "GIRB", NULL,
396 &state);
397 if (status < 0)
398 return status;
399
400 fujitsu_hotkey->irb = state;
401
402 return fujitsu_hotkey->irb;
403}
404
405static ssize_t
406ignore_store(struct device *dev,
407 struct device_attribute *attr, const char *buf, size_t count)
408{
409 return count;
410}
411
412static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
413static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
414 ignore_store);
d0482533
JW		 415static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
416
417static struct attribute *fujitsupf_attributes[] = {
20b93734
JW		 418 &dev_attr_brightness_changed.attr,
419 &dev_attr_max_brightness.attr,
d0482533
JW		 420 &dev_attr_lcd_level.attr,
421 NULL
422};
423
424static struct attribute_group fujitsupf_attribute_group = {
425 .attrs = fujitsupf_attributes
426};
427
428static struct platform_driver fujitsupf_driver = {
429 .driver = {
430 .name = "fujitsu-laptop",
431 .owner = THIS_MODULE,
432 }
433};
434
0e6a66e9 435static void dmi_check_cb_common(const struct dmi_system_id *id)
20b93734
JW		 436{
437 acpi_handle handle;
438 int have_blnf;
439 printk(KERN_INFO "fujitsu-laptop: Identified laptop model '%s'.\n",
440 id->ident);
441 have_blnf = ACPI_SUCCESS
442 (acpi_get_handle(NULL, "\\_SB.PCI0.GFX0.LCD.BLNF", &handle));
443 if (use_alt_lcd_levels == -1) {
444 vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detecting usealt\n");
445 use_alt_lcd_levels = 1;
446 }
447 if (disable_brightness_keys == -1) {
448 vdbg_printk(FUJLAPTOP_DBG_TRACE,
449 "auto-detecting disable_keys\n");
450 disable_brightness_keys = have_blnf ? 1 : 0;
451 }
452 if (disable_brightness_adjust == -1) {
453 vdbg_printk(FUJLAPTOP_DBG_TRACE,
454 "auto-detecting disable_adjust\n");
455 disable_brightness_adjust = have_blnf ? 0 : 1;
456 }
0e6a66e9
JW		 457}
458
459static int dmi_check_cb_s6410(const struct dmi_system_id *id)
460{
461 dmi_check_cb_common(id);
462 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
463 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
464 return 0;
465}
466
56960b54
TV		 467static int dmi_check_cb_s6420(const struct dmi_system_id *id)
468{
469 dmi_check_cb_common(id);
470 fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */
471 fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */
472 return 0;
473}
474
0e6a66e9
JW		 475static int dmi_check_cb_p8010(const struct dmi_system_id *id)
476{
477 dmi_check_cb_common(id);
478 fujitsu->keycode1 = KEY_HELP; /* "Support" */
479 fujitsu->keycode3 = KEY_SWITCHVIDEOMODE; /* "Presentation" */
480 fujitsu->keycode4 = KEY_WWW; /* "Internet" */
20b93734
JW		 481 return 0;
482}
483
afeb12b7 484static struct dmi_system_id fujitsu_dmi_table[] = {
20b93734 485 {
0e6a66e9 486 .ident = "Fujitsu Siemens S6410",
20b93734
JW		 487 .matches = {
488 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
489 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
490 },
491 .callback = dmi_check_cb_s6410},
56960b54
TV		 492 {
493 .ident = "Fujitsu Siemens S6420",
494 .matches = {
495 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
496 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"),
497 },
498 .callback = dmi_check_cb_s6420},
d8196a93 499 {
0e6a66e9 500 .ident = "Fujitsu LifeBook P8010",
d8196a93
JW		 501 .matches = {
502 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
503 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
0e6a66e9
JW		 504 },
505 .callback = dmi_check_cb_p8010},
20b93734
JW		 506 {}
507};
508
509/* ACPI device for LCD brightness control */
d0482533 510
b6f03ae6 511static int acpi_fujitsu_add(struct acpi_device *device)
d0482533 512{
20b93734
JW		 513 acpi_status status;
514 acpi_handle handle;
d0482533
JW		 515 int result = 0;
516 int state = 0;
20b93734
JW		 517 struct input_dev *input;
518 int error;
d0482533
JW		 519
520 if (!device)
521 return -EINVAL;
522
523 fujitsu->acpi_handle = device->handle;
524 sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
525 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
db89b4f0 526 device->driver_data = fujitsu;
d0482533 527
20b93734
JW		 528 status = acpi_install_notify_handler(device->handle,
529 ACPI_DEVICE_NOTIFY,
530 acpi_fujitsu_notify, fujitsu);
531
532 if (ACPI_FAILURE(status)) {
533 printk(KERN_ERR "Error installing notify handler\n");
534 error = -ENODEV;
535 goto err_stop;
536 }
537
538 fujitsu->input = input = input_allocate_device();
539 if (!input) {
540 error = -ENOMEM;
541 goto err_uninstall_notify;
542 }
543
544 snprintf(fujitsu->phys, sizeof(fujitsu->phys),
545 "%s/video/input0", acpi_device_hid(device));
546
547 input->name = acpi_device_name(device);
548 input->phys = fujitsu->phys;
549 input->id.bustype = BUS_HOST;
550 input->id.product = 0x06;
551 input->dev.parent = &device->dev;
552 input->evbit[0] = BIT(EV_KEY);
553 set_bit(KEY_BRIGHTNESSUP, input->keybit);
554 set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
555 set_bit(KEY_UNKNOWN, input->keybit);
556
557 error = input_register_device(input);
558 if (error)
559 goto err_free_input_dev;
560
d0482533
JW		 561 result = acpi_bus_get_power(fujitsu->acpi_handle, &state);
562 if (result) {
20b93734 563 printk(KERN_ERR "Error reading power state\n");
d0482533
JW		 564 goto end;
565 }
566
567 printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
568 acpi_device_name(device), acpi_device_bid(device),
569 !device->power.state ? "on" : "off");
570
20b93734
JW		 571 fujitsu->dev = device;
572
573 if (ACPI_SUCCESS
574 (acpi_get_handle(device->handle, METHOD_NAME__INI, &handle))) {
575 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
576 if (ACPI_FAILURE
577 (acpi_evaluate_object
578 (device->handle, METHOD_NAME__INI, NULL, NULL)))
579 printk(KERN_ERR "_INI Method failed\n");
580 }
581
582 /* do config (detect defaults) */
20b93734
JW		 583 use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
584 disable_brightness_keys = disable_brightness_keys == 1 ? 1 : 0;
585 disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
586 vdbg_printk(FUJLAPTOP_DBG_INFO,
587 "config: [alt interface: %d], [key disable: %d], [adjust disable: %d]\n",
588 use_alt_lcd_levels, disable_brightness_keys,
589 disable_brightness_adjust);
590
591 if (get_max_brightness() <= 0)
592 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
593 if (use_alt_lcd_levels)
594 get_lcd_level_alt();
595 else
596 get_lcd_level();
597
598 return result;
599
600end:
601err_free_input_dev:
602 input_free_device(input);
603err_uninstall_notify:
604 acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
605 acpi_fujitsu_notify);
606err_stop:
d0482533
JW		 607
608 return result;
609}
610
b6f03ae6 611static int acpi_fujitsu_remove(struct acpi_device *device, int type)
d0482533 612{
20b93734
JW		 613 acpi_status status;
614 struct fujitsu_t *fujitsu = NULL;
d0482533
JW		 615
616 if (!device || !acpi_driver_data(device))
617 return -EINVAL;
20b93734
JW		 618
619 fujitsu = acpi_driver_data(device);
620
621 status = acpi_remove_notify_handler(fujitsu->acpi_handle,
622 ACPI_DEVICE_NOTIFY,
623 acpi_fujitsu_notify);
624
625 if (!device || !acpi_driver_data(device))
626 return -EINVAL;
627
5cf83b9b 628 fujitsu->acpi_handle = NULL;
d0482533
JW		 629
630 return 0;
631}
632
20b93734
JW		 633/* Brightness notify */
634
635static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data)
636{
637 struct input_dev *input;
638 int keycode;
639 int oldb, newb;
640
641 input = fujitsu->input;
642
643 switch (event) {
644 case ACPI_FUJITSU_NOTIFY_CODE1:
645 keycode = 0;
646 oldb = fujitsu->brightness_level;
647 get_lcd_level(); /* the alt version always yields changed */
648 newb = fujitsu->brightness_level;
649
650 vdbg_printk(FUJLAPTOP_DBG_TRACE,
651 "brightness button event [%i -> %i (%i)]\n",
652 oldb, newb, fujitsu->brightness_changed);
653
654 if (oldb == newb && fujitsu->brightness_changed) {
655 keycode = 0;
656 if (disable_brightness_keys != 1) {
657 if (oldb == 0) {
0e6a66e9
JW		 658 acpi_bus_generate_proc_event
659 (fujitsu->dev,
660 ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS,
661 0);
20b93734
JW		 662 keycode = KEY_BRIGHTNESSDOWN;
663 } else if (oldb ==
664 (fujitsu->max_brightness) - 1) {
0e6a66e9
JW		 665 acpi_bus_generate_proc_event
666 (fujitsu->dev,
667 ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS,
668 0);
20b93734
JW		 669 keycode = KEY_BRIGHTNESSUP;
670 }
671 }
672 } else if (oldb < newb) {
673 if (disable_brightness_adjust != 1) {
674 if (use_alt_lcd_levels)
675 set_lcd_level_alt(newb);
676 else
677 set_lcd_level(newb);
678 }
679 if (disable_brightness_keys != 1) {
680 acpi_bus_generate_proc_event(fujitsu->dev,
0e6a66e9 681 ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS, 0);
20b93734
JW		 682 keycode = KEY_BRIGHTNESSUP;
683 }
684 } else if (oldb > newb) {
685 if (disable_brightness_adjust != 1) {
686 if (use_alt_lcd_levels)
687 set_lcd_level_alt(newb);
688 else
689 set_lcd_level(newb);
690 }
691 if (disable_brightness_keys != 1) {
692 acpi_bus_generate_proc_event(fujitsu->dev,
0e6a66e9 693 ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS, 0);
20b93734
JW		 694 keycode = KEY_BRIGHTNESSDOWN;
695 }
696 } else {
697 keycode = KEY_UNKNOWN;
698 }
699 break;
700 default:
701 keycode = KEY_UNKNOWN;
702 vdbg_printk(FUJLAPTOP_DBG_WARN,
703 "unsupported event [0x%x]\n", event);
704 break;
705 }
706
707 if (keycode != 0) {
708 input_report_key(input, keycode, 1);
709 input_sync(input);
710 input_report_key(input, keycode, 0);
711 input_sync(input);
712 }
713
714 return;
715}
716
717/* ACPI device for hotkey handling */
718
719static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
720{
721 acpi_status status;
722 acpi_handle handle;
723 int result = 0;
724 int state = 0;
725 struct input_dev *input;
726 int error;
727 int i;
728
729 if (!device)
730 return -EINVAL;
731
732 fujitsu_hotkey->acpi_handle = device->handle;
733 sprintf(acpi_device_name(device), "%s",
734 ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
735 sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
db89b4f0 736 device->driver_data = fujitsu_hotkey;
20b93734
JW		 737
738 status = acpi_install_notify_handler(device->handle,
739 ACPI_DEVICE_NOTIFY,
740 acpi_fujitsu_hotkey_notify,
741 fujitsu_hotkey);
742
743 if (ACPI_FAILURE(status)) {
744 printk(KERN_ERR "Error installing notify handler\n");
745 error = -ENODEV;
746 goto err_stop;
747 }
748
749 /* kfifo */
750 spin_lock_init(&fujitsu_hotkey->fifo_lock);
751 fujitsu_hotkey->fifo =
752 kfifo_alloc(RINGBUFFERSIZE * sizeof(int), GFP_KERNEL,
753 &fujitsu_hotkey->fifo_lock);
754 if (IS_ERR(fujitsu_hotkey->fifo)) {
755 printk(KERN_ERR "kfifo_alloc failed\n");
756 error = PTR_ERR(fujitsu_hotkey->fifo);
757 goto err_stop;
758 }
759
760 fujitsu_hotkey->input = input = input_allocate_device();
761 if (!input) {
762 error = -ENOMEM;
763 goto err_uninstall_notify;
764 }
765
766 snprintf(fujitsu_hotkey->phys, sizeof(fujitsu_hotkey->phys),
767 "%s/video/input0", acpi_device_hid(device));
768
769 input->name = acpi_device_name(device);
770 input->phys = fujitsu_hotkey->phys;
771 input->id.bustype = BUS_HOST;
772 input->id.product = 0x06;
773 input->dev.parent = &device->dev;
774 input->evbit[0] = BIT(EV_KEY);
0e6a66e9
JW		 775 set_bit(fujitsu->keycode1, input->keybit);
776 set_bit(fujitsu->keycode2, input->keybit);
777 set_bit(fujitsu->keycode3, input->keybit);
778 set_bit(fujitsu->keycode4, input->keybit);
20b93734
JW		 779 set_bit(KEY_UNKNOWN, input->keybit);
780
781 error = input_register_device(input);
782 if (error)
783 goto err_free_input_dev;
784
785 result = acpi_bus_get_power(fujitsu_hotkey->acpi_handle, &state);
786 if (result) {
787 printk(KERN_ERR "Error reading power state\n");
788 goto end;
789 }
790
791 printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
792 acpi_device_name(device), acpi_device_bid(device),
793 !device->power.state ? "on" : "off");
794
795 fujitsu_hotkey->dev = device;
796
797 if (ACPI_SUCCESS
798 (acpi_get_handle(device->handle, METHOD_NAME__INI, &handle))) {
799 vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
800 if (ACPI_FAILURE
801 (acpi_evaluate_object
802 (device->handle, METHOD_NAME__INI, NULL, NULL)))
803 printk(KERN_ERR "_INI Method failed\n");
804 }
805
806 i = 0; /* Discard hotkey ringbuffer */
807 while (get_irb() != 0 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) ;
808 vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
809
810 return result;
811
812end:
813err_free_input_dev:
814 input_free_device(input);
815err_uninstall_notify:
816 acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
817 acpi_fujitsu_hotkey_notify);
818 kfifo_free(fujitsu_hotkey->fifo);
819err_stop:
820
821 return result;
822}
823
824static int acpi_fujitsu_hotkey_remove(struct acpi_device *device, int type)
825{
826 acpi_status status;
827 struct fujitsu_hotkey_t *fujitsu_hotkey = NULL;
828
829 if (!device || !acpi_driver_data(device))
830 return -EINVAL;
831
832 fujitsu_hotkey = acpi_driver_data(device);
833
834 status = acpi_remove_notify_handler(fujitsu_hotkey->acpi_handle,
835 ACPI_DEVICE_NOTIFY,
836 acpi_fujitsu_hotkey_notify);
837
838 fujitsu_hotkey->acpi_handle = NULL;
839
840 kfifo_free(fujitsu_hotkey->fifo);
841
842 return 0;
843}
844
845static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
846 void *data)
847{
848 struct input_dev *input;
849 int keycode, keycode_r;
850 unsigned int irb = 1;
851 int i, status;
852
853 input = fujitsu_hotkey->input;
854
855 vdbg_printk(FUJLAPTOP_DBG_TRACE, "Hotkey event\n");
856
857 switch (event) {
858 case ACPI_FUJITSU_NOTIFY_CODE1:
859 i = 0;
860 while ((irb = get_irb()) != 0
861 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
862 vdbg_printk(FUJLAPTOP_DBG_TRACE, "GIRB result [%x]\n",
863 irb);
864
865 switch (irb & 0x4ff) {
0e6a66e9
JW		 866 case KEY1_CODE:
867 keycode = fujitsu->keycode1;
20b93734 868 break;
0e6a66e9
JW		 869 case KEY2_CODE:
870 keycode = fujitsu->keycode2;
20b93734 871 break;
0e6a66e9
JW		 872 case KEY3_CODE:
873 keycode = fujitsu->keycode3;
20b93734 874 break;
0e6a66e9
JW		 875 case KEY4_CODE:
876 keycode = fujitsu->keycode4;
20b93734
JW		 877 break;
878 case 0:
879 keycode = 0;
880 break;
881 default:
882 vdbg_printk(FUJLAPTOP_DBG_WARN,
0e6a66e9 883 "Unknown GIRB result [%x]\n", irb);
20b93734
JW		 884 keycode = -1;
885 break;
886 }
887 if (keycode > 0) {
888 vdbg_printk(FUJLAPTOP_DBG_TRACE,
889 "Push keycode into ringbuffer [%d]\n",
890 keycode);
891 status = kfifo_put(fujitsu_hotkey->fifo,
0e6a66e9
JW		 892 (unsigned char *)&keycode,
893 sizeof(keycode));
20b93734
JW		 894 if (status != sizeof(keycode)) {
895 vdbg_printk(FUJLAPTOP_DBG_WARN,
0e6a66e9
JW		 896 "Could not push keycode [0x%x]\n",
897 keycode);
20b93734
JW		 898 } else {
899 input_report_key(input, keycode, 1);
900 input_sync(input);
901 }
902 } else if (keycode == 0) {
903 while ((status =
904 kfifo_get
905 (fujitsu_hotkey->fifo, (unsigned char *)
906 &keycode_r,
907 sizeof
908 (keycode_r))) == sizeof(keycode_r)) {
909 input_report_key(input, keycode_r, 0);
910 input_sync(input);
911 vdbg_printk(FUJLAPTOP_DBG_TRACE,
0e6a66e9
JW		 912 "Pop keycode from ringbuffer [%d]\n",
913 keycode_r);
20b93734
JW		 914 }
915 }
916 }
917
918 break;
919 default:
920 keycode = KEY_UNKNOWN;
921 vdbg_printk(FUJLAPTOP_DBG_WARN,
922 "Unsupported event [0x%x]\n", event);
923 input_report_key(input, keycode, 1);
924 input_sync(input);
925 input_report_key(input, keycode, 0);
926 input_sync(input);
927 break;
928 }
929
930 return;
931}
932
933/* Initialization */
934
d0482533
JW		 935static const struct acpi_device_id fujitsu_device_ids[] = {
936 {ACPI_FUJITSU_HID, 0},
937 {"", 0},
938};
939
940static struct acpi_driver acpi_fujitsu_driver = {
941 .name = ACPI_FUJITSU_DRIVER_NAME,
942 .class = ACPI_FUJITSU_CLASS,
943 .ids = fujitsu_device_ids,
944 .ops = {
945 .add = acpi_fujitsu_add,
946 .remove = acpi_fujitsu_remove,
947 },
948};
949
20b93734
JW		 950static const struct acpi_device_id fujitsu_hotkey_device_ids[] = {
951 {ACPI_FUJITSU_HOTKEY_HID, 0},
952 {"", 0},
953};
954
955static struct acpi_driver acpi_fujitsu_hotkey_driver = {
956 .name = ACPI_FUJITSU_HOTKEY_DRIVER_NAME,
957 .class = ACPI_FUJITSU_CLASS,
958 .ids = fujitsu_hotkey_device_ids,
959 .ops = {
960 .add = acpi_fujitsu_hotkey_add,
961 .remove = acpi_fujitsu_hotkey_remove,
962 },
963};
d0482533
JW		 964
965static int __init fujitsu_init(void)
966{
20b93734 967 int ret, result, max_brightness;
d0482533
JW		 968
969 if (acpi_disabled)
970 return -ENODEV;
971
972 fujitsu = kmalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
973 if (!fujitsu)
974 return -ENOMEM;
975 memset(fujitsu, 0, sizeof(struct fujitsu_t));
0e6a66e9
JW		 976 fujitsu->keycode1 = KEY_PROG1;
977 fujitsu->keycode2 = KEY_PROG2;
978 fujitsu->keycode3 = KEY_PROG3;
979 fujitsu->keycode4 = KEY_PROG4;
980 dmi_check_system(fujitsu_dmi_table);
d0482533
JW		 981
982 result = acpi_bus_register_driver(&acpi_fujitsu_driver);
983 if (result < 0) {
984 ret = -ENODEV;
985 goto fail_acpi;
986 }
987
d0482533
JW		 988 /* Register platform stuff */
989
990 fujitsu->pf_device = platform_device_alloc("fujitsu-laptop", -1);
991 if (!fujitsu->pf_device) {
992 ret = -ENOMEM;
993 goto fail_platform_driver;
994 }
995
996 ret = platform_device_add(fujitsu->pf_device);
997 if (ret)
998 goto fail_platform_device1;
999
1000 ret =
1001 sysfs_create_group(&fujitsu->pf_device->dev.kobj,
1002 &fujitsupf_attribute_group);
1003 if (ret)
1004 goto fail_platform_device2;
1005
20b93734
JW		 1006 /* Register backlight stuff */
1007
7d5c89a6
TR		 1008 if (!acpi_video_backlight_support()) {
1009 fujitsu->bl_device =
1010 backlight_device_register("fujitsu-laptop", NULL, NULL,
1011 &fujitsubl_ops);
1012 if (IS_ERR(fujitsu->bl_device))
1013 return PTR_ERR(fujitsu->bl_device);
1014 max_brightness = fujitsu->max_brightness;
1015 fujitsu->bl_device->props.max_brightness = max_brightness - 1;
1016 fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
1017 }
20b93734
JW		 1018
1019 ret = platform_driver_register(&fujitsupf_driver);
1020 if (ret)
1021 goto fail_backlight;
1022
1023 /* Register hotkey driver */
1024
1025 fujitsu_hotkey = kmalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
1026 if (!fujitsu_hotkey) {
1027 ret = -ENOMEM;
1028 goto fail_hotkey;
1029 }
1030 memset(fujitsu_hotkey, 0, sizeof(struct fujitsu_hotkey_t));
1031
1032 result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
1033 if (result < 0) {
1034 ret = -ENODEV;
1035 goto fail_hotkey1;
1036 }
1037
d0482533
JW		 1038 printk(KERN_INFO "fujitsu-laptop: driver " FUJITSU_DRIVER_VERSION
1039 " successfully loaded.\n");
1040
1041 return 0;
1042
20b93734 1043fail_hotkey1:
d0482533 1044
20b93734 1045 kfree(fujitsu_hotkey);
d0482533 1046
20b93734 1047fail_hotkey:
d0482533
JW		 1048
1049 platform_driver_unregister(&fujitsupf_driver);
1050
20b93734 1051fail_backlight:
d0482533 1052
7d5c89a6
TR		 1053 if (fujitsu->bl_device)
1054 backlight_device_unregister(fujitsu->bl_device);
d0482533 1055
20b93734
JW		 1056fail_platform_device2:
1057
1058 platform_device_del(fujitsu->pf_device);
1059
1060fail_platform_device1:
1061
1062 platform_device_put(fujitsu->pf_device);
1063
1064fail_platform_driver:
1065
1066 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1067
1068fail_acpi:
d0482533
JW		 1069
1070 kfree(fujitsu);
1071
1072 return ret;
1073}
1074
1075static void __exit fujitsu_cleanup(void)
1076{
1077 sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
1078 &fujitsupf_attribute_group);
1079 platform_device_unregister(fujitsu->pf_device);
1080 platform_driver_unregister(&fujitsupf_driver);
7d5c89a6
TR		 1081 if (fujitsu->bl_device)
1082 backlight_device_unregister(fujitsu->bl_device);
d0482533
JW		 1083
1084 acpi_bus_unregister_driver(&acpi_fujitsu_driver);
1085
1086 kfree(fujitsu);
1087
20b93734
JW		 1088 acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver);
1089
1090 kfree(fujitsu_hotkey);
1091
d0482533
JW		 1092 printk(KERN_INFO "fujitsu-laptop: driver unloaded.\n");
1093}
1094
1095module_init(fujitsu_init);
1096module_exit(fujitsu_cleanup);
1097
20b93734
JW		 1098module_param(use_alt_lcd_levels, uint, 0644);
1099MODULE_PARM_DESC(use_alt_lcd_levels,
1100 "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
1101module_param(disable_brightness_keys, uint, 0644);
1102MODULE_PARM_DESC(disable_brightness_keys,
1103 "Disable brightness keys (eg. if they are already handled by the generic ACPI_VIDEO device).");
1104module_param(disable_brightness_adjust, uint, 0644);
1105MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
1106#ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
1107module_param_named(debug, dbg_level, uint, 0644);
1108MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
1109#endif
1110
1111MODULE_AUTHOR("Jonathan Woithe, Peter Gruber");
d0482533
JW		 1112MODULE_DESCRIPTION("Fujitsu laptop extras support");
1113MODULE_VERSION(FUJITSU_DRIVER_VERSION);
1114MODULE_LICENSE("GPL");
a361a82c 1115
0e6a66e9
JW		 1116MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
1117MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
20b93734 1118
a361a82c 1119static struct pnp_device_id pnp_ids[] = {
0e6a66e9
JW		 1120 {.id = "FUJ02bf"},
1121 {.id = "FUJ02B1"},
1122 {.id = "FUJ02E3"},
1123 {.id = ""}
a361a82c 1124};
0e6a66e9 1125
a361a82c 1126MODULE_DEVICE_TABLE(pnp, pnp_ids);
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